Certified Grounds Manager (CGM) — Questions and Answers

Question 1: What is the term for the annual loss in value of grounds equipment recorded for accounting purposes?

Depreciation (Correct answer)
Amortization
Accrual
Liquidation

Correct answer: Depreciation

Depreciation records the systematic reduction in an asset's book value over its useful life, reflecting wear and obsolescence.

Question 2: When analyzing turf density data collected at multiple sites, which measure of central tendency is most resistant to extreme outliers?

Mode
Median (Correct answer)
Range
Mean

Correct answer: Median

The median is resistant to outliers because it represents the middle value of ranked data, unaffected by extreme high or low values.

Question 3: Under OSHA regulations, what is the minimum slope percentage that requires a grounds worker using a ride-on mower to wear a rollover protection system (ROPS) seatbelt?

10%
5%
Any slope where equipment could tip (Correct answer)
15%

Correct answer: Any slope where equipment could tip

OSHA and equipment manufacturers require ROPS and seatbelt use whenever operating ride-on equipment where rollover risk exists, regardless of a specific slope percentage threshold.

Question 4: What is the primary risk of consistently underbidding a grounds maintenance contract to win business?

Inability to deliver the required quality or scope without financial loss (Correct answer)
Gaining excess profit margin
Winning too many contracts
Losing access to equipment suppliers

Correct answer: Inability to deliver the required quality or scope without financial loss

Underbidding means revenues will not cover costs, forcing the contractor to cut corners or absorb losses to honor the contract.

Question 5: Under OSHA's Hazard Communication Standard, employers must train workers on chemical hazards:

Only after a spill incident occurs
Every five years regardless of changes
Only once during initial onboarding
Whenever a new chemical hazard is introduced to the workplace (Correct answer)

Correct answer: Whenever a new chemical hazard is introduced to the workplace

OSHA HazCom requires retraining whenever a new physical or health hazard is introduced into the work area.

Question 6: When scheduling pesticide applications, grounds managers must consider the pesticide label's re-entry interval (REI) because:

It indicates when the product must be reapplied for effectiveness
It defines storage conditions required after application
It describes the period before the product becomes environmentally inactive
It specifies the minimum time workers must stay out of treated areas (Correct answer)

Correct answer: It specifies the minimum time workers must stay out of treated areas

The REI is a legally required safety period during which workers cannot enter treated areas without personal protective equipment to avoid exposure to pesticide residues.

Question 7: What is the recommended practice for managing clippings on a healthy, well-fertilized lawn?

Always bag and remove clippings to prevent thatch
Mulch clippings back into the turf to return nutrients (Correct answer)
Compost all clippings off-site before returning
Rake clippings into beds as mulch immediately

Correct answer: Mulch clippings back into the turf to return nutrients

Mulching clippings returns nitrogen and organic matter to the soil, reducing fertilizer needs without contributing significantly to thatch.

Question 8: Which nutrient ratio in a complete fertilizer is associated primarily with promoting root development in newly established landscapes?

High phosphorus (P) relative to nitrogen (Correct answer)
High potassium (K) with low nitrogen and phosphorus
High nitrogen (N) relative to phosphorus and potassium
Equal parts nitrogen, phosphorus, and potassium

Correct answer: High phosphorus (P) relative to nitrogen

Phosphorus promotes root growth, and starter fertilizers with higher P ratios are recommended when establishing new turf or planting.

Question 9: What is a key consideration when planting new trees?

Using the smallest holes.
Planting randomly.
Proximity to sidewalks only.
Sunlight, soil quality, and space availability (Correct answer)

Correct answer: Sunlight, soil quality, and space availability

When planting new trees, considering sunlight exposure, soil quality, and available space is crucial for their long-term health. Adequate sunlight ensures photosynthesis, good soil quality provides essential nutrients and drainage, and sufficient space allows for mature root and canopy development without obstruction.

Question 10: What is the purpose of a Request for Proposal (RFP) in grounds management contracting?

To authorize payment to a vendor
To track equipment inventory
To document completed work orders
To solicit competitive bids from qualified vendors for a defined scope of work (Correct answer)

Correct answer: To solicit competitive bids from qualified vendors for a defined scope of work

An RFP formally invites qualified contractors to submit detailed proposals for a specified scope of work, enabling competitive comparison.

Question 11: A crew member is mowing near a storm drain opening. Which hazard specific to this scenario requires immediate attention?

Fuel contamination of the stormwater system
Risk of the mower deck dropping into the opening (Correct answer)
Excessive noise near the drain grate
Vibration damage to underground pipes

Correct answer: Risk of the mower deck dropping into the opening

Mower wheels or the deck can drop into drain openings, causing the machine to tip suddenly and potentially injure the operator.

Question 12: In grounds management contracting, what is the purpose of a performance bond?

To cover equipment theft
To reward the contractor for early completion
To guarantee the contractor will complete the work per contract terms or the bond covers resulting losses (Correct answer)
To fund employee benefits

Correct answer: To guarantee the contractor will complete the work per contract terms or the bond covers resulting losses

A performance bond is a surety instrument that protects the project owner if the contractor fails to fulfill contractual obligations.

Question 13: What is 'in-situ chemical oxidation' (ISCO) used for in site remediation?

Reducing soil acidity through chemical neutralization
Applying chemicals to oxidize invasive plant root systems
Injecting oxidants into soil or groundwater to destroy organic contaminants (Correct answer)
Oxidizing excess nitrogen to prevent runoff

Correct answer: Injecting oxidants into soil or groundwater to destroy organic contaminants

ISCO involves injecting powerful oxidants such as permanganate or persulfate directly into contaminated zones to chemically destroy organic contaminants.

Question 14: Phytoremediation using sunflowers (Helianthus annuus) is particularly effective for which soil contaminant?

Chlorinated solvents
Heavy metals including lead and uranium (Correct answer)
Petroleum hydrocarbons
Nitrate compounds

Correct answer: Heavy metals including lead and uranium

Sunflowers are hyperaccumulators proven effective at extracting heavy metals such as lead, cesium, and uranium from contaminated soils.

Question 15: What is an encumbrance in a public-sector grounds management budget?

Funds committed by a purchase order or contract but not yet paid (Correct answer)
A penalty for overspending
A type of equipment lien
Unspent funds returned to general revenue

Correct answer: Funds committed by a purchase order or contract but not yet paid

An encumbrance reserves budget funds when a purchase order is issued, preventing those dollars from being spent elsewhere before the invoice is paid.

Question 16: A grounds manager finds white powdery coating on the upper surface of rose leaves. The correct identification is:

Botrytis blight, triggered by cool wet weather
Leaf scald, caused by intense reflected sunlight
Powdery mildew, caused by an ascomycete fungus (Correct answer)
Downy mildew, caused by a water mold

Correct answer: Powdery mildew, caused by an ascomycete fungus

Powdery mildew appears as a white talcum-like coating on upper leaf surfaces and is caused by obligate ascomycete fungi that thrive in warm days with cool nights.

Question 17: An Incident Command System (ICS) is best described as:

A federal database for recording workplace injuries
A state-mandated training program for first responders only
A software platform for tracking equipment during disasters
A standardized on-scene emergency management system allowing coordinated response (Correct answer)

Correct answer: A standardized on-scene emergency management system allowing coordinated response

ICS is a standardized management system that allows multiple agencies and teams to coordinate effectively during any emergency.

Question 18: What is the minimum safe clearance distance from energized overhead power lines for grounds equipment with non-insulated booms less than 50 feet long?

10 feet (Correct answer)
5 feet
3 feet
15 feet

Correct answer: 10 feet

OSHA 1910.333 requires at least 10 feet of clearance from energized lines up to 50 kV for uninsulated equipment.

Question 19: Which financial metric measures the number of months or years required for an investment to pay for itself through savings?

Payback period (Correct answer)
Net present value
Gross margin
Internal rate of return

Correct answer: Payback period

The payback period calculates how long it takes for cumulative savings or benefits from an investment to equal the initial cost.

Question 20: Which entity typically has authority to establish practice standards?

Equipment manufacturers
Individual practitioners
State licensing boards and professional regulatory bodies (Correct answer)
Insurance companies

Correct answer: State licensing boards and professional regulatory bodies

State licensing boards and professional regulatory bodies have the legal authority to establish and enforce practice standards within their jurisdiction.

Question 21: Which federal agency administers the National Pollutant Discharge Elimination System (NPDES) permit program?

Army Corps of Engineers
U.S. Fish and Wildlife Service
U.S. Environmental Protection Agency (Correct answer)
USDA Natural Resources Conservation Service

Correct answer: U.S. Environmental Protection Agency

The EPA administers the NPDES permit program established under the Clean Water Act, which regulates point source discharges of pollutants into U.S. waters.

Question 22: Under IPM principles, when should a chemical pesticide application be considered as a control measure?

Whenever a new pest species is first identified in the managed landscape
Only when pest populations or damage levels exceed the established action threshold (Correct answer)
Immediately upon detecting any pest presence, regardless of population size
On a predetermined calendar schedule to prevent pest populations from building up

Correct answer: Only when pest populations or damage levels exceed the established action threshold

In IPM, chemical controls are used as a last resort and only when pest populations exceed the action threshold, meaning damage or potential damage outweighs the cost of treatment.

Question 23: Which type of fire extinguisher is most appropriate for a fuel fire on a gasoline-powered grounds vehicle?

Class B (dry chemical or CO2) (Correct answer)
Class D (dry powder)
Class A (water-based)
Class C (CO2 only)

Correct answer: Class B (dry chemical or CO2)

Class B extinguishers are rated for flammable liquid fires including gasoline, which is the fuel source in most grounds equipment.

Question 24: A grounds crew is installing a new irrigation system. Which pipe material is most commonly specified for main lines in commercial landscape installations due to its pressure rating and longevity?

PVC Schedule 40 (Correct answer)
Polyethylene (PE) tubing
Copper Type M
Galvanized steel

Correct answer: PVC Schedule 40

PVC Schedule 40 is widely used for main irrigation lines because of its high pressure rating, durability, and cost-effectiveness in commercial applications.

Question 25: Which OSHA standard specifically governs the safe use of powered industrial trucks (forklifts and telehandlers) used on grounds maintenance operations?

OSHA 29 CFR 1926.502
OSHA 29 CFR 1910.178 (Correct answer)
OSHA 29 CFR 1904.39
OSHA 29 CFR 1910.147

Correct answer: OSHA 29 CFR 1910.178

29 CFR 1910.178 covers powered industrial trucks including forklifts and telehandlers used in general industry and grounds operations.

Question 26: Why is trend analysis valuable in monitoring?

It requires too much data to be practical
It only applies to financial metrics
It is only useful for historical documentation
It reveals patterns that predict future issues before they become critical (Correct answer)

Correct answer: It reveals patterns that predict future issues before they become critical

Trend analysis reveals patterns in system behavior that can predict future issues, enabling proactive intervention before problems impact users.

Question 27: What is the correct order for donning personal protective equipment?

Mask, gloves, gown, eye protection
Any order is acceptable
Gloves, gown, mask, eye protection
Gown, mask, eye protection, gloves (Correct answer)

Correct answer: Gown, mask, eye protection, gloves

The correct donning sequence (gown, mask, eye protection, gloves) ensures complete coverage and prevents contamination of already-donned items.

Question 28: Which approach best helps a grounds manager justify a budget increase for preventive maintenance programs?

Presenting multi-year data showing lower total repair costs when preventive maintenance is performed (Correct answer)
Citing the cost of a single emergency repair as an isolated example
Requesting a budget increase without supporting data
Comparing budgets from unrelated industries

Correct answer: Presenting multi-year data showing lower total repair costs when preventive maintenance is performed

Multi-year data demonstrating that preventive maintenance reduces total repair expenses provides compelling, evidence-based justification for the investment.

Question 29: How often should lawn mowers be serviced?

Regularly per manufacturer guidelines (Correct answer)
Once per year only.
Never needed.
After every use.

Correct answer: Regularly per manufacturer guidelines

Lawn mowers, like all machinery, require regular maintenance to ensure optimal performance and longevity. Following manufacturer guidelines for servicing, which includes tasks like blade sharpening, oil changes, and filter cleaning, prevents breakdowns, ensures safety, and maintains cutting efficiency.

Question 30: Under the Integrated Pest Management (IPM) framework, which step must occur before any control tactic is selected?

Remove all affected plant material from the site
Notify the client and schedule treatment immediately
Identify the pest and assess population levels against an action threshold (Correct answer)
Apply a preventive broad-spectrum pesticide

Correct answer: Identify the pest and assess population levels against an action threshold

IPM requires accurate pest identification and comparing population levels to established action thresholds before choosing any intervention.

Certified Grounds Manager (CGM)

The Certified Grounds Manager (CGM) credential, awarded by the Professional Grounds Management Society (PGMS), validates expertise across four core competencies: Human Resource Management, Business and Financial Management, and Technical Management in both horticulture and non-horticulture grounds operations.

Questions

35 min

Time Limit

70%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds